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Review of flow control mechanisms of leading-edge vortices
Abstract Vortex control concepts employed for slender and nonslender delta wings were reviewed. Important aspects of flow control include flow separation, vortex formation, flow reattachment, vortexExpand
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Flow-induced vibrations of low aspect ratio rectangular membrane wings
Abstract An experimental study of a low aspect ratio rectangular membrane wing in a wind tunnel was conducted for a Reynolds number range of 2.4×104–4.8×104. Time-accurate measurements of membraneExpand
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Thrust enhancement due to flexible trailing-edge of plunging foils
Drag reduction for hydrofoils is studied through thrust generation on foils plunging at low Strouhal numbers in order to simulate the action of the ocean waves. Force, deformation and flow fieldExpand
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Oscillating Flexible Wings at Low Reynolds Numbers
In nature a range of techniques are used to overcome the challenges of low Reynolds number flight. In this paper two of these are considered, wing oscillations and wing flexibility. The force,Expand
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Lift enhancement through flexibility of plunging wings at low Reynolds numbers
In this paper the combined effect of two mechanisms for lift enhancement at low Reynolds numbers are considered, wing oscillations and wing flexibility. The force, deformation and flow fields ofExpand
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Investigation of High-Lift Mechanisms for a Flat-Plate Airfoil Undergoing Small-Amplitude Plunging Oscillations
Two high-lift mechanisms, namely, convected leading-edge vortices and stable deflected jets, have previously been identified for an airfoil undergoing small-amplitude plunging oscillations. In thisExpand
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Periodically plunging foil near a free surface
Experiments were performed to investigate the effects of amplitude and depth on the drag reduction of a NACA 0012 airfoil plunging near a free surface for a range of frequencies. Beyond the effect ofExpand
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Frequency lock-in phenomenon for self-sustained roll oscillations of rectangular wings undergoing a forced periodic pitching motion
The free-to-roll behaviour of rigid and membrane rectangular wings with an aspect ratio of two was studied in wind tunnel experiments conducted at a chord Reynolds number of Rec = 46 000.Expand
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Lift enhancement by means of small-amplitude airfoil oscillations at low Reynolds numbers
Force and particle image velocimetry measurements were conducted on a NACA 0012 airfoil undergoing small-amplitude sinusoidal plunge oscillations at a poststall angle of attack and Reynolds number ofExpand
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Vortex mode bifurcation and lift force of a plunging airfoil at low reynolds numbers
Force and supporting particle image velocimetry measurements were performed on a plunging NACA 0012 airfoil at a Reynolds number of 10,000, at pre-stall, stall, and post-stall angles of attack. TheExpand
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